US5290900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable fluorosilicone resin composition
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1993-04-08
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Granted: 1994-03-01
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Expires: 2013-04-08
Abstract
Abstract A curable fluorosilicone resin composition is disclosed, which composition comprises (A) 100 parts by weight of a fluorosilicone resin obtained by cohydrolyzing a mixture of (a) 50 to 95 mole percent of a perfluoroalkyl-containing organosilane having the formula R--CH 2 CH 2 SiX 3 , (b) 5 to 50 mole percent of an epoxy-containing organosilane having the formula Z w SiX 4-w and, optionally, (c) up to 50 mole percent of an organosilane having the formula R 1 n SiX 4-n , wherein R is a perfluoroalkyl group containing 4 to 15 carbon atoms, X is a hydrolyzable group, Z is an epoxy-containing monovalent organic group, R 1 is hydrogen or a monovalent hydrocabon group containing 1 to 15 carbon atoms, w is 1, 2 or 3 and n is 0, 1, 2 or 3; and (B) 1 to 50 parts by weight of a crosslinking agent selected from the group consisting of (i) an amino group-containing organosilicon compound that contains at least 2 nitrogen-bonded active hydrogens in each molecule and (ii) a fluorine compound that contains at least 2 carboxyl groups and at least 2 fluorine atoms in each molecule. When cured, the composition provides a film that is both highly water repellent and highly oil repellent.
Inventors
- 👤 Hideki Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:56
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
187 words
A curable fluorosilicone resin composition comprising: (A) 100 parts by weight of a fluorosilicone resin obtained by cohydrolyzing a mixture of (a) 50 to 95 mole percent of a perfluoroalkyl-containing organosilane having the formula R--CH 2 CH 2 SiX 3 , (b) 5 to 50 mole percent of an epoxy-containing organosilane having the formula Z w SiX 4-w and, optionally, (c) up to 50 mole percent of an organosilane having the formula R 1 n SiX 4-n , wherein R is a perfluoroalkyl group containing 4 to 15 carbon atoms, X is a hydrolyzable group, Z is an epoxy-containing monovalent organic group, R 1 is hydrogen or a monovalent hydrocabon group containing 1 to 15 carbon atoms, w is 1, 2 or 3 and n is 0, 1, 2 or 3; and (B) 1 to 50 parts by weight of a crosslinking agent selected from the group consisting of (i) an amino group-containing organosilicon compound that contains at least 2 nitrogen-bonded active hydrogens in each molecule and (ii) a fluorine compound that contains at least 2 carboxyl groups and at least 2 fluorine atoms in each molecule.
Claim 2
Dependent Claim
187 words
A curable fluorosilicone resin composition comprising: (A) 100 parts by weight of a fluorosilicone resin obtained by cohydrolyzing a mixture of (a) 50 to 95 mole percent of a perfluoroalkyl-containing organosilane having the formula R--CH 2 CH 2 SiX 3 , (b) 5 to 50 mole percent of an epoxy-containing organosilane having the formula Z w SiX 4-w and, optionally, (c) up to 50 mole percent of an organosilane having the formula R 1 n SiX 4-n , wherein R is a perfluoroalkyl group containing 4 to 15 carbon atoms, X is a hydrolyzable group, Z is an epoxy-containing monovalent organic group, R 1 is hydrogen or a monovalent hydrocabon group containing 1 to 15 carbon atoms, w is 1, 2 or 3 and n is 0, 1, 2 or 3; and (B) 1 to 50 parts by weight of a crosslinking agent selected from the group consisting of (i) an amino group-containing organosilicon compound that contains at least 2 nitrogen-bonded active hydrogens in each molecule and (ii) a fluorine compound that contains at least 2 carboxyl groups and at least 2 fluorine atoms in each molecule.
Claim 3
Dependent Claim
44 words
The curable resin composition according to claim 1, wherein X of each said organosilane (a), (b) and (c) is a methoxy radical and said crosslinking agent (B) is an amino group-containing organosilicon compound that contains at least 2 nitrogen-bonded active hydrogens in each molecule.
Claim 4
Dependent Claim
28 words
The curable resin composition according to claim 2, wherein Z of said epoxy-containing organosilane (b) is selected from the group consisting of 3-glycidoxypropyl, 2-(3,4-epoxycyclohexyl)ethyl, 3-(3,4-epoxycyclohexyl)propyl, and 3,4-epoxycyclohexyl groups.
Claim 5
Dependent Claim
29 words
The curable resin composition according to claim 3, wherein said amino group-containing organosilicon compound is selected from the group consisting of 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-(2'-aminoethyl)aminopropyltrimethoxysilane, 3-(2'-aminoethyl)aminopropylmethyldimethoxysilane, 1,3-di(3'-aminopropyl)tetramethyldisiloxane, and 3-aminopropyldimethylsiloxy-endblocked polydimethylsiloxane.
Claim 6
Dependent Claim
17 words
The curable resin composition according to claim 4, wherein w of said epoxy-containing organosilane (b) is 1.
Claim 7
Dependent Claim
47 words
The curable resin composition according to claim 1, wherein X of each said organosilane (a), (b) and (c) is a methoxy radical and said crosslinking agent (B) is a fluorine compound that contains at least 2 carboxyl groups and at least 2 fluorine atoms in each molecule.
Claim 8
Dependent Claim
28 words
The curable resin composition according to claim 6, wherein Z of said epoxy-containing organosilane (b) is selected from the group consisting of 3-glycidoxypropyl, 2-(3,4-epoxycyclohexyl)ethyl, 3-(3,4-epoxycyclohexyl)propyl, and 3,4-epoxycyclohexyl groups.
Claim 9
Dependent Claim
30 words
The curable resin composition according to claim 3, wherein said fluorine compound is selected from the group consisting of tetrafluoroterephthalic acid, tetrafluorophthalic acid, tetrafluorosuccinic acid, octafluoroadipic acid and their anhydrides.
Claim 10
Dependent Claim
17 words
The curable resin composition according to claim 8, wherein w of said epoxy-containing organosilane (b) is 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-28 | 1997-08-30 | 1998-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-28 | 2001-08-30 | 2002-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-28 | 2005-08-30 | 2006-03-01 | $7700.00 | Window Closed / Lapsed |